Thread: Help with gear ratio
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Unread 26-01-2004, 11:43
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Wayne C. Wayne C. is offline
hey- I think we did pretty good?
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Help with gear ratio
This is not wayne c. this is his son. It wont let me sign him out.

Ok im trying to think up a gear ratio. So im taking the direct drive and compairing it to what I want it to drive at. What I did is I took the rpms and i multiplied it by the circumfrence of our tires and then i divided by 60 to convert it to inch/minute/sec. but its coming out way to large....

What do the CIM motors normally run at(RPMs)!?

4"/12"(convert to feet)=.333... * 3.14(Pi)(circumference)=1.246666ft...

1.04666ft*5000rpm=5233.3333ft/min.../60sec = 87.222... ft/min./sec?????

This is wrong why?
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